Math
posted by Demora .
Fred is an old man. He lived oneeighth of his life as a boy, onetwelfth as a youth, onehalf as a man and has psent 28 years in his old age. How old is Fred now?

what is psent?

solve
x/8 + x/12 + x/2 + 28 = x
multiply each term by 48 ....etc
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